Update (07.06.2018): Siemens has officially solved this issue with Rev 0406 of  CPCX26.

Several years ago SIEMENS released the SICAM AK3, the newest version of its biggest and most powerful SICAM RTU. By doing so, the company aimed not only to facelift the older AK ACP, but also to cut product costs, thus making it more attractive to the market.…